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Old 05-10-2009, 08:05 AM
 
Location: FL/TX Coasts
1,464 posts, read 3,788,969 times
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here the scoop:
when I boot up my PC, the monitor does not turn on...I hear sort of knocking noise coming from the monitor for a few minutes...then the display comes up fine!

what do you think is the problem?

Thanks!
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Old 05-10-2009, 09:38 AM
 
10,755 posts, read 18,015,770 times
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LCD or CRT?
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Old 05-10-2009, 11:05 AM
 
Location: FL/TX Coasts
1,464 posts, read 3,788,969 times
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Quote:
Originally Posted by nhdave View Post
lcd or crt?
lcd.
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Old 05-10-2009, 11:18 AM
 
Location: Beaverland, OR
588 posts, read 2,586,682 times
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Sounds like one of the monitor's internal power supplies is having a hard time starting, and what you are hearing is the supply's repeated attempts to start. Based on the audible knocking noise, I would guess that it is the high voltage inverter that powers the LCD backlight.
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Old 05-10-2009, 11:21 AM
 
Location: FL/TX Coasts
1,464 posts, read 3,788,969 times
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Quote:
Originally Posted by juggler View Post
Sounds like one of the monitor's internal power supplies is having a hard time starting, and what you are hearing is the supply's repeated attempts to start. Based on the audible knocking noise, I would guess that it is the high voltage inverter that powers the LCD backlight.
how do I fix that?
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Old 05-10-2009, 05:27 PM
 
10,755 posts, read 18,015,770 times
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Quote:
Originally Posted by Cougar31 View Post
how do I fix that?
You don't. You'd need to take it to a shop with the equipment to troubleshoot the electronics, read this as toss it and buy a new one unless it's under warranty.
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